<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <script src="https://cdn.jsdelivr.net/npm/vue@2.6.14/dist/vue.js"></script>

    <title>Document</title>
</head>
<body>
    <div id="app">
       <p> {{count}}</p>
        <button @click="add">add</button>
        <p>{{result }}</p>
    </div>
    <script>
        let app = new Vue({
            el: '#app',
            data() {
                return {
                    count: 1,
                    msg: 'hello'
                }
            }
            ,methods: {
                add() {
                    this.count++
                }
            },
            computed: {
                result() {
                    return `当前的count值为： ${this.count}`
                }
            }
        })
    </script>
</body>
</html>